21297900

素因数分解:

$2^2\times 3^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{127}}^1$

素因数の和:200

約数の個数: 144

約数和(自身を含む): 68440064

約数和(自身を除く): 47142164

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 25, 26, 30, 39, 43, 50, 52, 60, 65, 75, 78, 86, 100, 127, 129, 130, 150, 156, 172, 195, 215, 254, 258, 260, 300, 325, 381, 390, 430, 508, 516, 559, 635, 645, 650, 762, 780, 860, 975, 1075, 1118, 1270, 1290, 1300, 1524, 1651, 1677, 1905, 1950, 2150, 2236, 2540, 2580, 2795, 3175, 3225, 3302, 3354, 3810, 3900, 4300, 4953, 5461, 5590, 6350, 6450, 6604, 6708, 7620, 8255, 8385, 9525, 9906, 10922, 11180, 12700, 12900, 13975, 16383, 16510, 16770, 19050, 19812, 21844, 24765, 27305, 27950, 32766, 33020, 33540, 38100, 41275, 41925, 49530, 54610, 55900, 65532, 70993, 81915, 82550, 83850, 99060, 109220, 123825, 136525, 141986, 163830, 165100, 167700, 212979, 247650, 273050, 283972, 327660, 354965, 409575, 425958, 495300, 546100, 709930, 819150, 851916, 1064895, 1419860, 1638300, 1774825, 2129790, 3549650, 4259580, 5324475, 7099300, 10648950, 21297900]

約数ペア:

[(1, 21297900), (2, 10648950), (3, 7099300), (4, 5324475), (5, 4259580), (6, 3549650), (10, 2129790), (12, 1774825), (13, 1638300), (15, 1419860), (20, 1064895), (25, 851916), (26, 819150), (30, 709930), (39, 546100), (43, 495300), (50, 425958), (52, 409575), (60, 354965), (65, 327660), (75, 283972), (78, 273050), (86, 247650), (100, 212979), (127, 167700), (129, 165100), (130, 163830), (150, 141986), (156, 136525), (172, 123825), (195, 109220), (215, 99060), (254, 83850), (258, 82550), (260, 81915), (300, 70993), (325, 65532), (381, 55900), (390, 54610), (430, 49530), (508, 41925), (516, 41275), (559, 38100), (635, 33540), (645, 33020), (650, 32766), (762, 27950), (780, 27305), (860, 24765), (975, 21844), (1075, 19812), (1118, 19050), (1270, 16770), (1290, 16510), (1300, 16383), (1524, 13975), (1651, 12900), (1677, 12700), (1905, 11180), (1950, 10922), (2150, 9906), (2236, 9525), (2540, 8385), (2580, 8255), (2795, 7620), (3175, 6708), (3225, 6604), (3302, 6450), (3354, 6350), (3810, 5590), (3900, 5461), (4300, 4953)]